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Finding the Fourth Proportional to 303,539.80, 455,309.70 and 93,150.40

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Solution

The fourth proportional to 303,539.80, 455,309.70 and 93,150.40 is: 139,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,539.80 : 455,309.70 = 93,150.40 : x
  2. Step 2: Convert to fraction form
    303,539.80/455,309.70 = 93,150.40/x
  3. Step 3: Cross multiply
    303,539.80x = 455,309.70 × 93,150.40
  4. Step 4: Simplify right side
    303,539.80x = 42,412,280,678.88
  5. Step 5: Solve for x
    x = 42,412,280,678.88/303,539.80
  6. Step 6: Final answer
    x = 139,725.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.